Attachment for sound-reproducing devices



0m. 16, 1923, mmm L. BLAHA ATTACHMENT FOR SOUND REPRODUCING DEVICESFiled May 20. 1921 Fig.1.

"ra atype N'TEDQ: STATES PATENT. OFFICE.

LUDWIG BLAHA, OF'LYNDHURST, NEW JERSEY.

.LTTACHMENT FOR SOUND-REPRODUCING DEVICES.

Application filed May 20, 1921.

To all whom it may concern:

Beit known that I, Luowm BLAHA, a subiect of the Republic of Austria,residing at yndhurst, in the county of Hudson and State of New Jersey,have invented a new and useful Improvement in Attachments forSound-Reproducing Devices, of which the following is a specification.

The resent invention relates to improvements in attachments fortalking-machines and similar sound-reproducing devices which employrecords of the so-called disk As is well known, the conventional type oftalking-machine embodies a turntable mounted on the spindle whichprojects above the surface of the turntable and is adapted to protrudethrough a centrally located aperture in the soundrecord, when the recordis positioned upon the turntable for reproduction. The under surface ofthe record lies in continuous contact with the upper surface of theturnable, which is usually felted; and, when it is desired to remove therecord,it must be raised sufiicient- 1y to enable it to be grasped bythe fingers so as to permit the sides of the aperture of the record topass freely. over the spindle. Owin to the configuration of the recordand t e fact that it is relatively thin, difficulty is frequentlyexperienced in. effecting a sufiiciently stron grip on the outer edgethereof to raise t e record from contact with the turntable. In manyinstances it is necessary to insert the finger-nail between the recordand the turntable to raise the former so that it may be grasped, or touse some other means to effect a similar result.

The object of the present invention is to provide an attachment fortalking-machines and sound-reproducing devices employing records of thedisk type, whereby the record may be positively raised from contact withthe turntable with. the greatest ease so that the edge thereof may begrasped and the record removed from the machine in a minimum amount oftime.

, 1 Another object of my invention is to provide an attachment forfacilitating the re- Serial No. 471,093.

moval of records from talking-machines and other sound-reproducingdevices in which records of the disk type are employed, which may bedetachably connected to the cooperating part or parts of the machine,and will be capable of movement relatively thereto so as to carry outthe objects of this invention in a highly eilicient manner.

Other objects and advantages of my invention will become manifest as thedescription proceeds, and I would have it understood that I reserve untomyself all rights to the full range of equivalents both in structure anduses to which I may be entitled under my invention in its broadestaspect.

For the purposes of the present disclosure, I have elected to illustrateand describe one form of my invention as used in conjunction with atalking-machine of the conventional type employed for the reproductionof disk sound records.

I shall now proceed to describe my invention with reference to theaccompanying drawings, and then point out with more particularity theessential elements of novelty residing therein, in the appended claims.

In the drawings, Figure 1 is a view in elevation of my attachment fortalking-machines and the like shown in position on the spindle of atalking-machine, the turntable and record being in section;

Fig. 2 is a sectional elevation of the structure shown in Fig. 1,showing the attach ment in the position which it takes when the recordis raised from contact with the turntable;

, Fig. 3 is a plan view partly in section of myl attachment mounted uponthe spindle; an

F ig. 4 is a view in perspective of the attachment illustrated in Figs.1 to 3, inclus1ve.

Referring to the drawings in detail, in which like characters ofreference are ern ployed to designate similar parts throughout theseveral views, 7 indicates the turntable which is mounted on the spindle8 protruding through the deck 9 of the talking-machine in the usualmanner. In the present instance, it will be observed that the turntable7 has a centrally located dependent boss 10 which is provided with atransverse slot or groove 11 to receive the pin 12 which passes through.the spindle 8.

The general practice is to form the turntable 7 with a centrally locatedannular depression, such as shown at 13, in the upper face thereof, thetop surface of the turntable being covered with a felted or similarmaterial as shown at 14.

The spindle 8 projects through the turntable 7, and the record 15 iscentrally apertured to fit over the projecting end of the spindle, sothat the record will be held in playing position, or, in other words, incontinuous contact with the felted surface of the turntable.

In order to remove the record 15 from the turntable 7, it is necessaryto separate or raise it from contact with the felted surface of theturntable by the finger tips, in order that the record may be graspedwithin the fingers and removed from the spindle. Obvi0usly,by reason ofthe fact that the record is usually under one-eight of an inch inthickness, it is difiicult to obtain a suflicient purchase on the edgethereof by the finger tips to raise the same, so that the top and bottomfaces may be grasped between the fingers for lifting the record from thespindle. This is especially true where the records are of the samediameter as that of the turntable, or where they are of a lesserdiameter, such, for instance, as the 10- inch and 12-inch records whichare generally in use today.

In order to quickly raise the record so that it may be removed from thespindle with the greatest ease, I provide an attachment to be mountedupon the spindle which is adapted to engage the under surface of therecord and by means of which it may be raised and supported during theraising movement and until the record is removed from thetalking-machine or the like. This attachment comprises a sleeve orthimble 16 having a preferably integal annular flange 17 provided at itslower end. The wall of the sleeve or thimble 16 is formed with anelongated slot 18 having an offset portion 19 at its lower end, thisofiset portion registering with a slot 20 formed on the inner peripheryof the flanged portion 17, as clearly shown in Fig. 1. Adjacent to theupper end of the spindle 8, I locate a pin 21 which is adapted to ridewithin the slot- 18 of said thimble or sleeve 16.

The attachment is positioned on the spindle 8 by passing the slot 20 andoffset portion 19 of the slot 18 over the pin 21, after which thethimble is given a slight rotary movement to bring the pin 21 within theslot 18, thus permitting the attachment to be moved downwardly on thedurin imroea is desired to remove the record from the machine, the upperend 16 of the thimble or sleeve 16 is grasped between the fingers andthe attachment drawn upwardly on the spindle 8, the'pin 21 riding withinthe slot 18 to the position shown in Fig. 2. The

sleeve or thimble 16 is slightly less than the diameter of the recordaperture 15, the spindle 8 being turned down sufiiciently to enable itto telescope within the sleeve or thimble, so that the attachment isfreely movable in the manner described. Oct course, it is obvious that,where it is not desired to turn down the spindle, the internal diameterof the sleeve or thimble 16 may b slightly greater than the externaldiameter of the spindle, in which event the recordaperture 15 may beenlarged to permit the same to pass freely over the exterior of thethimble or sleeve of the attachment. \Vhere theattachment isincorporated in new structures, the proportions of the cooperatingelements may be fixed in any suitable manner to efliciently carry outthe objects of my invention.

While I have described my invention with reference to the specificdetails of structure herein shown, it is evident that the same.

may be varied without departing from the spirit and scope of myinvention.

claim: 1. An'attachment for sound-reproducing machines, comprising asleeve adapted to be telescopically mounted upon the spindle of thesound-reproducing machine, said sleeve having an annularlaterally-extending flange atits lower end adapted to lie between theopposed surfaces of the turntable and record, when the record is inposition on the turntable.

2. An attachment for raising phonographic records of the disk type fromthe turntable of a talking-machine, comprising a sleeve adapted to beslidably mounted upon the, spindle of the machine, saidsleeve having alaterally-extending flange at the lower end thereof adapted to liebetween the opposed surfaces of the turntable and phonographic record,whereby the record may be raised from cont-act with the turntable by theupward movement of said sleeve on the spindle, said flange supportingthe record such movement.

3. attachment for effecting the removal of phono aphic disk records fromthe turntable 0 a talking-machine, comprising a sleeve slidably mountedupon the spindle of the machine and provided with an elongated slothaving an oifset portion at its lower end, a flange extending laterallyfrom the lower end of said sleeve, said flange being adapted to bepositioned between the opposed surfaces of the phonographic rec ord andturntable when the record is in playing osition, and means associated'with the spm le for limiting the upward movement of said sleevethereon, the raising of said attachment efi'ecting the withdrawal of therecord from contact with the turntable, whereby the record may begrasped and removed from the machine.

4. The combination with a talking-machine having a turntable and asupporting spindle, of an-attachment forremoving disk phonographicrecords from said turntable, said attachment comprising a sleeve adaptedto fit upon said spindle and movable longitudinally thereof, said sleevebeing formed with an elongated slot having an ofiset portion at itslower end, a flange extending laterally from the bottom of said sleeve,and a pin in said spindle adapted to ride within said elongated slot andlimit the upward movement of said sleeve relative to said spindle.

5; An attachment for removing a phonographic disk record from theturntable of a talking-machine, omprising a sleeve having alaterally-extending flange at its lower end, said sleeve bein adapted tobe positioned on the spindle 0%:1 talking-machine so that said flangewill lie in contact with the turntable, whereby said sleeve will extendthrough the record aperture when the record is positioned on theturntable, the upward movement of the attachment relative to the spindleeffecting the withdrawal of the record from the turntable.

6. The combination with the spindle of a talking-machine having aturntable adapted to support phonographic disk records, of an attachmentfor withdrawing the records from contact with the turntable, saidattachment embodying a sleeve mounted on said spindle and formed with anelongated slot having an offset at its lower'end, a fla e extendinglaterally from the bottom of said sleeve and provided with a recessregistering with said offset, a pin in said spindle, said pin beingadapted to pass through said .recess and said ofi'set, whereby a rotarymovement of said attachment will .permlt said pin to ride within theelongated slot in said sleeve and limit the upward movement of saidattachment relative to said '5 indle.

7. The herein described disk li r comprising a base adapted toco-operate. with the-bottom surface of a disk, and a pedestal connectedto the base and extending at an angle therefrom and adapted to passthrough the center hole of the disk.

' LUDWIG BLAHA.

